Obtained 35 stack frames.
/usr/games/crawl-git-a4dabe5d3f(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5b1fbfe2199e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-a4dabe5d3f(_Z20crash_signal_handleri+0x18f) [0x5b1fbfe21e0f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x75ed5dd57330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x75ed5ddb0b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x75ed5dd5727e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x75ed5dd3a8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x75ed5dd3b7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x75ed5ddbaff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xad13c) [0x75ed5ddbf13c]: 
/lib/x86_64-linux-gnu/libc.so.6(realloc+0x255) [0x75ed5ddc02f5]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcbeb44) [0x5b1fc05f4b44]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcb9aa5) [0x5b1fc05efaa5]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcba912) [0x5b1fc05f0912]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcbab24) [0x5b1fc05f0b24]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcb9983) [0x5b1fc05ef983]: 
/usr/games/crawl-git-a4dabe5d3f(+0xcbaf64) [0x5b1fc05f0f64]: 
/usr/games/crawl-git-a4dabe5d3f(lua_pcallk+0x95) [0x5b1fc05ed215]: 
/usr/games/crawl-git-a4dabe5d3f(_ZN4CLua5pcallEii+0x60) [0x5b1fbfe06a00]: CLua::pcall(int, int)
/usr/games/crawl-git-a4dabe5d3f(_ZN4CLua6callfnEPKcii+0xb4) [0x5b1fbfe08324]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-a4dabe5d3f(_Z13do_crash_dumpv+0x1b84) [0x5b1fbfe31324]: do_crash_dump()
/usr/games/crawl-git-a4dabe5d3f(_Z20crash_signal_handleri+0x1fa) [0x5b1fbfe21e7a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x75ed5dd57330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x75ed5ddb0b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x75ed5dd5727e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x75ed5dd3a8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x75ed5dd3b7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x75ed5ddbaff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x75ed5ddbd38c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x75ed5ddbfdae]: 
/usr/games/crawl-git-a4dabe5d3f(_ZN13message_store5clearEv+0x73) [0x5b1fc0191b13]: message_store::clear()
/usr/games/crawl-git-a4dabe5d3f(+0x2f114a) [0x5b1fbfc2714a]: 
/usr/games/crawl-git-a4dabe5d3f(+0x2f3e9d) [0x5b1fbfc29e9d]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x75ed5dd3c1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x75ed5dd3c28b]: 
/usr/games/crawl-git-a4dabe5d3f(_start+0x25) [0x5b1fbfd55245]: